The Full Form of ACCL is‍ Automatic Changeover Current Limiter.

Current limiting is the practice in various electrical and electronic circuits for commanding an upper limit on the current which may be supplied to a load for the purpose of guarding the circuit transmitting or generating the current from the dangerous effects due to a problem in the load. A fuse is the simplest method of current limiting for mains. As the current beats the limit of the fuse then it blows thus detaching the load from the basis. This technique is most frequently used for protecting the household mains. So, the automatic change over with current limiter using a microcontroller is widely used in various applications such as houses, apartments & commercial complexes. The models of these devices are available in single phase and three phase, which are used to measure load current and true RMS.